4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peter Chen <peter.c...@nxp.com>
commit c526c62d565ea5a5bba9433f28756079734f430d upstream.
cdev->config is checked for null pointer at above code, so cdev->config
might be null, fix it by adding null pointer check.
Signed-off-by: Peter Chen <peter.c...@nxp.com>
Signed-off-by: Felipe Balbi <felipe.ba...@linux.intel.com>
Signed-off-by: Arnd Bergmann <a...@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/usb/gadget/composite.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1819,6 +1819,8 @@ unknown:
break;
case USB_RECIP_ENDPOINT:
+ if (!cdev->config)
+ break;
endp = ((w_index & 0x80) >> 3) | (w_index & 0x0f);
list_for_each_entry(f, &cdev->config->functions, list) {
if (test_bit(endp, f->endpoints))
